Smartwatch band



FIG. 1 is a perspective view of a smartwatch band showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is an enlarged top plan view thereof; and,

FIG. 7 is an enlarged bottom plan view thereof.

The broken line shown in the drawings illustrate portions of the article and form no part of the claimed design. 

CLAIM The ornamental design for a smartwatch band, as shown and described. 